Wow, that's awesome! I was very sad without the clickbait articles. I was staring at Firefox thinking "i wish it had a cluttered start page with clickbait articles and sponsored content like MS Edge" - and then with this new update the devs nailed it! Thanks!
That's really perfect!
Ot let people opt-in if it is truly something great to have. Why put something on one wants there to "let people turn it off"?
Because they want to make money with that and if it's opt in they might as well not put it in at all.